OC: Hit a brick wall. HEEELP!

Installed my 1st water sys last night... dayam that was a long night!

Everything is working fine! So i try push the OC a bit further, but i cant get passed 3.5Ghz (wont even post)
Will run fine at 3.3Ghz at 1.235v
Tried 3.6 as high as 1.35v! No joy

Why do i suck balls?
My 805 would boot 3.6 on air no worries (diff mobo)

Specs: 820D (2.8)
Asus P5ND2-sli
DDR2 533 2x512
x1950XT
600W psu

Cant get reliable temps with this cpu/mobo, but gfx card is down from 60-70c to 40c so i know whater works!

Help! This suxxoRz!
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More about brick wall heeelp
  1. Quote:
    Installed my 1st water sys last night... dayam that was a long night!

    Everything is working fine! So i try push the OC a bit further, but i cant get passed 3.5Ghz (wont even post)
    Will run fine at 3.3Ghz at 1.235v
    Tried 3.6 as high as 1.35v! No joy

    Why do i suck balls?
    My 805 would boot 3.6 on air no worries (diff mobo)

    Specs: 820D (2.8)
    Asus P5ND2-sli
    DDR2 533 2x512
    x1950XT
    600W psu

    Cant get reliable temps with this cpu/mobo, but gfx card is down from 60-70c to 40c so i know whater works!

    Help! This suxxoRz!


    give it some more juice! 1.45v is still safe, just wait for someone to double check that for a prescott etc
  2. Don't go pass 1.55v, that's the safe limit for them Pentium D as far as I know. I have brought my 840 to that vcore to reach 4Ghz. You suck balls?, no comment on that one.

    Try this:

    1.45vcore
    +.3v FSB
    DDR2 400 and don't change the timing

    See how far can you overclock on that one. You can add more voltage to the cpu but don't go pass 1.55vcore. Watch the temps. Test for stability.
  3. HAHAHA, yeah i suck balls @ oc teh 820 :twisted:
    Dayam... 1.4v huh. Strange tho as id imaging a somewhat linear/log relationship between Ghz and V. At 3.3Ghz/1.2xx its under volted if anything. :?

    Will try up2 1.5v when i get home tho.
    Will get a core2 when i stop spending $ on coke and hookers :twisted: :twisted: :twisted:

    Thanks guys.
  4. Thanks again guys.

    Finished my water sys this morning b4 work. All seems fine apart from one small leak 8O

    Temps are all fine, so i tried oc a bit further.

    Still no joy.

    Went up2 1.55v @ 3.6Ghz and it wont even post. I cant get any heigher with this cpu/mobo which makes me thing one of them aint doing its job.

    Guess i gotta find another chip :(
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